Sawing-machine.



No. 860,387. PATENTED JULY 16, 19,07.

C. A. KALLSTROM.

SAWING MAGHINB.

APPLIUATIOH FILED JAN. 13. 1908.

, 3 SHEETS-SHEET 1.

,47T ORNE YS No. 860,387.. PATENTED JULY 16, 1907. C. A. KALLSTROM.

SAWING MACHINE.

APPLIOATION FILED JAN. 1s, 190e.

3 SHEETS-SHEET 2.

W/TNESSES:

A TTOHNE YS No. 860,387. PATENTED JULY 16, 1907. C. A. KALLSTROM.

SAWING MACHINE.

APPLIOATION FILED JAN. 1a, 190e.

s SHEETS-SHEET a.

W/TNESSES: /NVENTO/' By @dn/www Y@ A TTOHNE YS CHARLES AUGUST KALLSTROM, OF LUFFENHOLTZ, CALIFORNIA.

SAWING-MACHINE Specification of LettersPatent.

Patented July 16, 1907.

Application filed January 13. 1906. Serial No. 295.875.

To all whom it 'may concern:

Be it known that I, CHARLES AUGUST KALLsTnoM, a

' citizen of the United States, and a resident of Lufferiholtz, inthe county of Humboldt and State of California., have invented a new and Improved Sawing-Machine, of which the following is a full, clear, and exact A description.

My invention relates to apparatus for sawing lumber and more particularly to shingle machines.

Its principal objects are to` provide an effective apparatus which may be conveniently adjusted and which will guard the operator againstaccident.

`Jofmy improved machine.

Reference is to be had to the accompanying drawings `forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

' Figure 1 is a front elevation of the principal portion Fig. 2 is a vertical section therethrough on the lines 2 2 of Fig. l. Fig. 3 is a horizontal section on the line 3-3 of Fig. 2. Fig. 4 shows the upper portion of themachine in front eleva- .v tion, with the elements in another position. Fig. 5 is a perspective detail of the means for manually moving one of the feed-rolls. 25

Y Fig. (i is a detail in side elevation of the ratchet mechanism upon the actuating-shaft.

Fig.- 7 is a perspective view of one of the actuating members, and Fig. 8 illustrates digrannnatically the relation of the work to the saw. l

l I have here shown a narrow. vertical main-frame 10 from thevinside of which extend opposite projections 1l.-11, fumishing vertical guides for a frame 12 of the work-carriage, thisvframebeing preierably formed of amgle-iron.` Mounted near the center of the carriageframc isa table 13 extending farther at one side of the main-frame than at'the other and having its outer eX- tremity supported by brackets 13%. Journaled in the table .withy their peripheries extending above it are a se ries of work-supporting rolls 14. At the innerside of the frame, or that opposite its extension, are separated feed-rolls 15 and 16, the former oI which `is rotatably mounted in normally-fixedilower and upper bearingblocks l? and 18, respectively, attached to intermediate and upper horizontal members 19 and 20 of the frame l2. Movable upon the members 19 and 20 and toward and from these.bearing-blocks are similar blocks 2l and y22 in which are journaled the roll 1G. Extending from .the blocks 2l and 22 are pills or prjections 23 entering the slots`24 in the members 19 and 2.0, these permittingthemovement of the blocks along the members while holding them against displacement. Connecting the blocks 1.7 and 2l and 18 and 22 are springs 25-25 Whichk tend to draw the movable blocks toward their companions, thus holding the feed-rolls in their most closely adjacent relation. To permit the operator to varylt'he` space between the feed1'o1ls, a lever 26 is fulcrumed upon the frame members 19 and 20, it having a roll are actuated to their maximum extent.

looped portion projecting at one side of the table and outwardly from the main-frame. The inner ends 27 of this looped lever enter openings 28 in the blocks 2l and 22, their engagement permitting the blocks` and consequently the feed roll carried therelrv. to be moved outwardly when the lever is swung toward thc table. Although the blocks 17 and 1S have been rcferred to as normally xed i1 will be evident that they may be attached to the frame at different points. thus allowing the introduction ol blocks of quite different widths.

Adjacent to the frame 10 is a standard 29 carrying the bearings of a shaft 30. this shaft having fixed upon il a saw 3]. The saw may be driven at the desired speed from any suitable source of power by a pulley 32 fast upon the shaft. The inner face of the saw is adjacent and parallel to the axes of the feed-rolls.

The carriage-frame has pivotally connected to it n rod or driving member 33 which may extend to some mechanism suitably counterweighted to compensate for the mova'ble parts of the machine, and which will cause the reciprocation of the table along the guides preferably with a slow downward movement and a quick return. l

In the bearing-blocks 18 and 22 are journaled hori` -zontal shafts 34 which are connected by bevel gearing v At the opposite ends of the shafts .34 from the gearing are attached ratchet-wheels 3G 35 to the feed-rolls.

with which coperate pawls 37 movably mounted upon standards 38 rising froin the member 19 and havinga slot and pin connection 39 therewith. Springs 40 connect the standards and pawls and serve' to draw the latter to their highest po: lions. The pawls are provided with upwardly projecting contact arms 41, which contact-arms coperate with actuatingblocks 42-42 fixed by screws 43 to a shaft 44 journaled near the top of the main-frame. The sides of the block project at different distances from the shaft, so that when the arms 41 contact with them they will cause the pawls to move through different distances.

The direction of maximum extension of each of the actuating-blocks is substantiallylat right angles to that of its companion, thus causing a minimum movement of one pawl and therefore a similar rotation of the associated feed-roll when the other pawl and feed- To vary amount of movement thus secured, plates 44 may be screwed to the sides of the blocks.

To present one or another of the faces of the blocks `to the contact-arms of the pawls. the shaft 44 is intermittently rotated through a quarter-turn; this I have shown as accomplished by a ratchet-wheel 45 fixed to the shaft and engaged by a pawl 46 pivoted upon an arm 47 projecting from the carriage-fratrie. A spring 48 draws the operating end of the pawl into engagement with the ratchet-wheel. A detent 49 pivoted upona bracket attached to the main-frame is held against the ratchet-wheel 45 by a spring 51,V this detent being placed oppositely to the pawl 46 and serving to prevent reverse rotation oi the actuating-shaft.

In using the machine, the operator places one or more blocks upon the supporting-rolls, it` two are ap. plied, they being situated one above the other. Then, by swinging the lever 26 inwardly, the feedroll 16 is separated from its companion, permittng'the introduction Aot the blocks between the rolls. The lever being released, the springs draw the feed-rolls toward one another thus firmly holding the block in its proper relation to the-saw. 'As the driving mechanism operates the carriage is rapidly raised, bringing the contaCt-'arms 41 against the faces of the actuating-blocks. As these7 as has been stated', project at different distances While the ends of the arms lie in the same horizontal plane, the feed-rolls will be rotated through different angles, thus Causing one side of the block to be fed farther than the other (Fig. 8). As the carriage slowly descends the block will be brought down upon the upper edge of the saw and the shingle will be cut at the proper inclination. This operation is then automatically repeated; but as V the carriage descended the pawl 46 will have rotated the actuating-shalt through 90 degrees, thus reversing the faces o the blocks. A reversal of the feed-rolls will result so that the next shingle will be cut at an opposite incline. If the operator notices a defect in either end of the block he may throw out the pawle, thus causing the saw to cut twoor more butts at the same end. The same course may be followed if one end of the block is wider than the other. Il' one desires to saw boxlumber or other short stock rather than shingles, the actuating-blocks may be turned so that similar faces project in the same direction, thus causing the work to be advanced in right lines. At the same time the pawl 46 is thrown ont.

1t Will be noted that the operator stands upon the side of' therame at which the carriage projects, and this is at the opposite side from the saw, It will,v therefore, be practically impossible for him to be injured. As the carriage moves vertically there is substantially no friction on the track and no lost motion; and, asthe cutting takes place at the sides of the saw,

the dust will leave it in a vertical direction, rendering v bein.;r in :uplane parallel to the plane of the saw, a ratchet wheel secured to each of the feed rolls. a pawl arm on thel frame adjacent to each of the ratchet wheels, pawls slidably mounted on the respective arms for engaging the ratchet. .wheels whereby to rotate the rolls, aV shaft ournaled transversely of the support near the upper end thereof. blocks .on the shaft for vengaginrr the pawls whereby to move them into Contact with the r/ntchet. whecs. said blocks beingr rectangular in Cross section and with one dimension greater than the other, and s/lidabll` nn the shaft whereby to permit their arrangement with the greater dimension of one at an angle to the greater dimension of the other. means for fixing the blocks with "cspect to the shaft. a ratchet wheel secTlred tul the shaft.

and a pawl on the frame for engaging 4the ratchet wheel on each upward movement of the traine. whereby to partally rotate thc shaft to bring the blocks into a new lasition with respect to the pawlsA 2. A sawing' machine comprising a reciprocable frame. spaced feed rolls journaled in the frame.' ratchet wheels un the rolls, pawls for operating said ratchet wheels. a shaft a1. one end of the travel ofthe frame, blocks on lhe shaft for operating the pawls, said-blocks being rectangular in cross section and having one dimension greater` than the other. means for adjusting the blocks on the shaft. hereby to place the greater dimension of one ai an angle with respect to thev greater dimension of the fz-ther. and means for rotating the shaft a quarter turn during each complete reciprocation of the frame.

In testimony whereof I have signed my name to this specitication in the presence of two subscribing witnesses.

CHARLES AI'GI'S'I KALLS'liNlM. Witnesses:

Ilnxn S. Snam'. J. R. Buowx. 

